Add Tech Lead Journal podcast appearance

about.html

@@ -59,6 +59,7 @@ <h3 id="audio">
 <p>
     During the years, I've been the guest on various podcasts:
     <ul>
+        <li><a href="https://techleadjournal.dev/episodes/89/">Tech Lead Journal <em>Code That Fits in Your Head - Mark Seemann</em></a></li>
         <li><a href="http://azuredevopspodcast.clear-measure.com/mark-seemann-code-that-fits-in-your-head-episode-189">Azure DevOps Podcast <em>Mark Seemann: Code That Fits In Your Head</em></a></li>
         <li><a href="https://www.case-podcast.org/50-mark-seemann-on-heuristics-for-software-engineering">Conversations about Software Engineering <em>Mark Seemann on heuristics for software engineering</em></a></li>
         <li><a href="https://dotnetrocks.com/?show=1759">.NET Rocks! <em>Code that Fits in Your Head with Mark Seemann</em></a></li>